I’m not in the habit of getting naked during meetings at startup offices, but this time it felt appropriate.

Nebia, a shower startup that has attracted investments from the likes of Apple CEO Tim Cook and former Google chairman Eric Schmidt’s foundation is back with some new cash (though it won’t divulge how much) and a new generation of its thoughtfully designed shower heads that aim to dramatically reduce the amount of water people use while cleaning up.

After a lengthy chat with Nebia CEO Philip Winter who discussed all of the nuances of the Nebia’s second-gen “Spa Shower” that they just launched a crowdfunding campaign for today, he asked whether I’d like to try it out. With a couple hours of empty space in my calendar, I said “Why not?” and wandered over to the startup office’s shower showroom.

Shower Thoughts

This was probably the most analytical thinking I’ve done in the shower about the process of showering itself.

The shower head in my bathroom at home is pretty standard and basically concentrates the water into a couple dozen streams organized in a circle that are firing at an even pace. It’s nothing fancy, I couldn’t tell you the brand, but I can say that I spend at least 20-30 minutes in there everyday without exception.

Nebia’s shower is wildly more complicated — as a $499 shower should be — but it’s the combination of different techniques that leads to a shower that feels full and refreshing but is using significantly less water than you’re used to. The customer for this is probably placing a healthier premium on the fact that it’s great for the environment than that it’s a spa-type experience, the shower head uses 65 percent less water than your average shower head, the company says.

The Nebia shower is all a very strange feat of engineering and involves the water being “atomized” as they called it, with water droplets being significantly smaller when it exits some nozzles leading to an enveloping mist and larger and warmer jets being shot out of the shower head’s center. The big improvement in this generation is that the water is about 29 percent warmer.

How does the shower head even control warmth? Isn’t all the water coming from the same heater? As Winter explained to me, things are a lot more complicated when it comes to how Nebia handles thermodynamics. Smaller water droplets means increased surface area exposed to the room temperature which means greatly sped up heat dissipation. In practice, this means that the distance the water can travel from the shower head before getting chilly is a much shorter journey than your current shower. To adjust that, Nebia fires the water droplets three times quicker and maintains some larger droplet streams to maintain the heat for longer.

Nebia does a bit of cheating by also having a second shower head firing from the hip. The wand adds to the water being used but still keeps the system using about half of the amount of water that the average shower head uses.

Thankfully, there was also room for a side-by-side comparison as I was able to try out both the gen-1 and gen-2 Spa Shower in the same bathroom. The shower experience didn’t feel wildly distinct but the difference in water heat when cranked to full blast was notable, my own temperature sensing isn’t quite finely tuned enough to confirm the 29 percent figure, but that doesn’t seem off.

Ultimately, it was the best shower I’ve had in a startup’s offices to date, but it was also a shower that didn’t feel as though I was resting my head under a light trickle of cold water like other low-flow showers. It’s a real product though at this point it’s also a decidedly premium product, even with the $100 crowdfunding discount of the $499 retail price. Beyond the warmer water, the new shower’s easy-install system is now compatible with about 95 percent of American homes, the company says. There’s also a new matte black color option and a little matching shower shelf you can add to keep that high-design look.

The company, which launched out of Y Combinator, has attracted some top investors who seem to be intrigued by the water-saving impact. The company says they’ve already shipped over 16,000 shower heads and that over 100 million gallons of water have been saved.

This Series A investment was led by Moen, the faucet and shower head maker which also announced a partnership with the startup. The latest round also boasts follow-on investment from Tim Cook and The Schmidt Family Foundation as well as some new investors like Airbnb co-founder Joe Gebbia, Starwood Hotels co-founder Barry Sternlicht, Fitbit co-founder James Park and Stanford StartX.

The crowdfunding campaign kicked off today and has already blown through $300k in pre-orders (they’ve already sold most of the $349 early bird deals); the company hopes to ship the first 2.0 shower heads in June.